I have encountered a VERY strange problem.
First, I charged the battery completely. Then by the end of the day, the battery charge fell down to 70% (which is understandable) and THEN suddenly when i checked back, it showed me a battery charge of just 15%?? So i put it for charging and would ya look at that, the battery charged popped to 70% instantly.
This has happened a lot now. Any idea what's going on?